Tuna is a desktop app for managing tasks, optimised for use via a GUI.

1. Add Todo, Deadline and Event tasks.
2. List all tasks.
3. List tasks that occur on a specified date.
4. Delete a task.
5. Mark or Un-mark a task when it is completed.
6. Sort tasks in chronological order.
7. Find tasks that contain a specified keyword.
8. Load and Save data into the hard disk.

• Words in UPPER_CASE are the parameters to be supplied by the user.
  e.g. in todo TASK_DESCRIPTION, TASK_DESCRIPTION is a parameter which can be used as todo complete assignments.
• Items in square brackets are optional.
• For commands that involve date and time, the symbols are represented as such:
  • Y: Year
  • M: Month
  • D: Day
  • H: Hour
  • m: Minute

Adds a todo task to the list.

Format: todo TASK_DESCRIPTION

Example of usage:

Adds a deadline task to the list.

Format: deadline TASK_DESCRIPTION /by DEADLINE_OF_TASK

• DEADLINE_OF_TASK has to be formatted as such: YYYY-MM-DD HH:mm

Example of usage:

Adds an event task to the list.

Format: event EVENT_DESCRIPTION /at DATE_AND_TIME_OF_EVENT

• DATE_AND_TIME_OF_EVENT has to be formatted as such: YYYY-MM-DD HH:mm

Example of usage:

Shows a list of all tasks in the task list.

Format: list [DATE]

• If DATE is not provided, all tasks will be shown.
  If DATE is provided, only tasks that occur on the same date as DATE will be shown.

Example of usage:

Deletes the task at the specified index.

Format: delete INDEX

• Deletes the task at the specified INDEX.
• The index must be a positive integer.
• The index must be within the range of 1 to the total number of tasks.

Example of usage:

Marks the task at the specified index as done.

Format: mark INDEX

• Marks the task at the specified INDEX.
• The index must be a positive integer.
• The index must be within the range of 1 to the total number of tasks.

Example of usage:

Un-marks the task at the specified index as done.

Format: unmark INDEX

• Un-marks the task at the specified INDEX.
• The index must be a positive integer.
• The index must be within the range of 1 to the total number of tasks.

Example of usage:

Sorts all tasks in the task list in chronological order.

Format: sort

• Event and Deadline tasks will be sorted to the top of the list, while Todo tasks will be sorted to the bottom.

Example of usage:

Finds all tasks which contains the specified keyword.

Format: find KEYWORD

• Only the task description is searched
• The search is case-sensitive e.g. Homework will not match homework.
• Only full words will be matched e.g. movie will not match movies.

Example of usage:

Exits the program and saves the data into the data file.

Format: bye

Tuna data are loaded automatically when the program starts.

Tuna data are saved in the hard disk automatically after bye is entered.

Tuna data are saved as a .txt file in [JAR FILE LOCATION]/data/tuna.txt

Caution: If your changes to the data file makes it format invalid, Tuna will no longer run
To fix this, delete the data file and run the program again, Tuna will create a blank data file.